Golf club head

Abstract

Golf club heads are described having a club head portion, a shaft portion connected to the club head portion, and a grip portion connected to the shaft portion. The club head portion has a heel portion, a sole portion, a toe portion, a crown portion, a hosel portion, and a striking face. The striking face can have a center face roll contour, a toe side roll contour, a heel side roll contour, a center face bulge contour, a crown side bulge contour, and a sole side bulge contour. The toe side roll contour can be more lofted than the center face roll contour. The heel side roll contour can be less lofted than the center face roll contour. The crown side bulge contour can be more open than the center face bulge contour, and the sole side bulge contour can be more closed than the center face bulge contour.

The invention claimed is: 
     
       1. A golf club head comprising:
 a hosel portion, a heel portion, a sole portion, a toe portion, a crown portion, and a striking face having a striking face surface; 
 the crown portion comprising a composite crown; 
 the striking face comprising a composite face plate; 
 the striking face having a center face location; 
 a center face vertical plane passing through the center face location, the center face vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a center face roll contour; 
 a toe side vertical plane being spaced away from the center face vertical plane by 30 mm toward the toe portion, the toe side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a toe side roll contour; 
 a heel side vertical plane being spaced away from the center face vertical plane by 30 mm toward the heel portion, the heel side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a heel side roll contour; 
 a center face horizontal plane passing through the center face location, the center face horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a center face bulge contour; 
 a crown side horizontal plane being spaced away from the center face horizontal plane by 15 mm toward the crown portion, the crown side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a crown side bulge contour; 
 a sole side horizontal plane being spaced away from the center face horizontal plane by 15 mm toward the sole portion, the sole side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a sole side bulge contour; 
 wherein the toe side roll contour is more lofted than the center face roll contour, the heel side roll contour is less lofted than the center face roll contour, the crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour. 
 
     
     
       2. The golf club head of  claim 1 , wherein the composite crown extends forward of a vertical midplane that passes through a center of gravity of the club head and extends in a heel-toe direction and in a sole-crown direction. 
     
     
       3. The club head of  claim 1 , wherein the composite crown is bonded to a bonding ledge of the crown portion, and the bonding ledge has a width between 1 mm and 7 mm. 
     
     
       4. The golf club head of  claim 1 , wherein:
 a coordinate system is located at the center face location of the striking face and includes a positive x-axis projecting toward the heel portion, a positive y-axis projecting toward a rear portion of the club head parallel to a ground plane, and a positive z-axis projecting toward the crown portion; and 
 the composite crown includes an apex of the crown portion defining a highest point of the club head as measured along the positive z-axis, and the apex is rearward of a hosel axis of the hosel portion. 
 
     
     
       5. The golf club head of  claim 1 , wherein an average FA° Δ of an upper toe quadrant is between 0.3° to 0.5°. 
     
     
       6. The golf club head of  claim 1 , wherein an average LA° Δ of an upper toe quadrant is between 0.4° to 0.8°. 
     
     
       7. The golf club head of  claim 1 , further comprising a weight port positioned rearward of a center of gravity of the golf club head, and a moment of inertia about a golf club head CG z-axis (Izz) is greater than 450 kg mm 2  and a moment of inertia about a golf club head CG x-axis (Ixx) is greater than 300 kg·mm 2 ;
 wherein the club head has a ratio of depth to width that is between 0.956 and 1.0. 
 
     
     
       8. A golf club head comprising:
 a hosel portion, a heel portion, a sole portion, a toe portion, a crown portion, and a striking face having a striking face surface; 
 the sole portion comprising a weight port for receiving a weight; 
 the striking face comprising a composite face plate; 
 the striking face having a center face location; 
 a center face vertical plane passing through the center face location, the center face vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a center face roll contour; 
 a toe side vertical plane being spaced away from the center face vertical plane by 30 mm toward the toe portion, the toe side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a toe side roll contour; 
 a heel side vertical plane being spaced away from the center face vertical plane by 30 mm toward the heel portion, the heel side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a heel side roll contour; 
 a center face horizontal plane passing through the center face location, the center face horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a center face bulge contour; 
 a crown side horizontal plane being spaced away from the center face horizontal plane by 15 mm toward the crown portion, the crown side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a crown side bulge contour; 
 a sole side horizontal plane being spaced away from the center face horizontal plane by 15 mm toward the sole portion, the sole side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a sole side bulge contour; 
 wherein the toe side roll contour is more lofted than the center face roll contour, the heel side roll contour is less lofted than the center face roll contour, the crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour. 
 
     
     
       9. The golf club head of  claim 8 , further comprising a weight mounted in the weight port. 
     
     
       10. The golf club head of  claim 8 , wherein the weight port defines a central axis that extends through the sole portion and the crown portion. 
     
     
       11. The golf club head of  claim 8 , wherein the weight port is positioned rearward of a center of gravity of the golf club head, and a moment of inertia about a golf club head CG z-axis (Izz) is greater than 450 kg·mm 2  and a moment of inertia about a golf club head CG x-axis (Ixx) is greater than 300 kg·mm 2 . 
     
     
       12. The golf club head of  claim 11 , wherein the club head has a ratio of depth to width that is between 0.956 and 1.0. 
     
     
       13. The golf club head of  claim 8 , wherein an average FA° Δ of an upper toe quadrant is between 0.3° to 0.5°. 
     
     
       14. The golf club head of  claim 8 , wherein an average LA° Δ of an upper toe quadrant is between 0.4° to 0.8°. 
     
     
       15. A golf club head comprising:
 a hosel portion, a heel portion, a sole portion, a toe portion, a crown portion, and a striking face having a striking face surface; 
 the sole portion comprising a recessed channel; 
 the striking face comprising a composite face plate; 
 the striking face having a center face location; 
 a center face vertical plane passing through the center face location, the center face vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a center face roll contour; 
 a toe side vertical plane being spaced away from the center face vertical plane by 30 mm toward the toe portion, the toe side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a toe side roll contour; 
 a heel side vertical plane being spaced away from the center face vertical plane by 30 mm toward the heel portion, the heel side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a heel side roll contour; 
 a center face horizontal plane passing through the center face location, the center face horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a center face bulge contour; 
 a crown side horizontal plane being spaced away from the center face horizontal plane by 15 mm toward the crown portion, the crown side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a crown side bulge contour; 
 a sole side horizontal plane being spaced away from the center face horizontal plane by 15 mm toward the sole portion, the sole side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a sole side bulge contour; 
 wherein the toe side roll contour is more lofted than the center face roll contour, the heel side roll contour is less lofted than the center face roll contour, the crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour. 
 
     
     
       16. The golf club head of  claim 15 , further comprising a plurality of ribs connected to an interior portion of the recessed channel, and wherein the crown portion comprises a composite crown and a bonding ledge having a width between 1 mm and 7 mm, and the composite crown is bonded to the bonding ledge. 
     
     
       17. The golf club head of  claim 15 , further comprising a weight coupled to the sole portion rearward of the recessed channel. 
     
     
       18. The golf club head of  claim 15 , wherein the recessed channel comprises a fastener opening configured to receive a fastening member for securing an adjustable head-shaft connection assembly. 
     
     
       19. The golf club head of  claim 15 , wherein:
 a coordinate system is located at the center face location of the striking face and includes a positive x-axis projecting toward the heel portion, a positive y-axis projecting toward a rear portion of the club head parallel to a ground plane, and a positive z-axis projecting toward the crown portion; and 
 the club head has a depth dimension D along the y-axis that is less than 4.4 inches. 
 
     
     
       20. The golf club head of  claim 15 , wherein the club head has a ratio of depth to width that is between 0.956 and 1.0. 
     
     
       21. The golf club head of  claim 15 , wherein an average FA° Δ of an upper toe quadrant is between 0.3° to 0.5°. 
     
     
       22. The golf club head of  claim 15 , wherein an average LA° Δ of an upper toe quadrant is between 0.4° to 0.8°.